There may be no single cause of bipolar disorder (aka manic depression). Instead, research indicates the causes of bipolar disorder are probably a combination of biochemical, genetic and environmental factors that may trigger and perpetuate the chemical imbalances in the brain.
Net worth: $829 million. Telecommunications mogul Strive Masiyiwa is widely regarded as the richest man in Zimbabwe and is one of the richest men in Africa with a net worth of more than US$800 million.
His net worth was an estimated $500 million, which translates to almost 50 billion Kenyan Shillings. This is how Forbes described his wealth: âKenyaâs Deputy Prime Minister Uhuru Kenyatta is the son of Kenyaâs first President, Jomo Kenyatta, and heir to some of the largest land holdings in Kenya.